WASHINGTON - The Obama administration faces a grilling from the US Congress amid reports China and India are expanding their imports of Iranian petroleum.

Chinese government data show imports of Iranian crude jumping 29 percent since November compared to the previous six months. Reports suggest Indian imports are growing even more, though US officials reject such data.

Members of Congress are concerned. Legislative aides say questions will be raised when the State Department's nuclear negotiator Wendy Sherman and the Treasury Department's sanctions chief David Cohen brief lawmakers Thursday. (AP)